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Wednesday, July 1, 2026

Birdwatching at Lake Merritt

Spent a wonderful morning at Lake Merritt and Lakeside Park in Oakland, California on a birdwatching expedition. The event was sponsored by the Golden Gate Bird Alliance. Mari, Gaymond, and I car pooled and met up with the group at the Lake Merritt Sailboat House on Adams Point.

Summer is a slower time for birdwatching, since many migrating birds have reached their destinations, but we were assured we'd still see birds and possibly their offspring. Expert birders Hilary P., Peggy R., and Katherine C. led the hike. Quite a few of us showed up with our cameras, binoculars, and scopes; and with all levels of experience, from novice to expert.


Assembling for the birdwatching event

Our route in blue, on Adam Point


Lake Merritt is a 155-acre salt water tidal lake/lagoon that is situated in the heart of Oakland. It operates as a tidal wildlife refuge, connecting to the San Francisco Bay via an artificial channel. A 3.4-mile perimeter trail surrounds the lake, and adjacent to the water is Lakeside Park. We have been to Lakeside Park to visit the Japanese garden, Bonsai garden, Botanical garden, Native garden, and more. Together, the lake and park provide recreational opportunities for a densely populated urban area.

A series of small islands near the lake edge provides favored gathering places for many birds, especially pelicans, egrets, and herons. Other birds seem to like hanging out on floats on the lake, and still others are content to linger along the lakeside path.


Birds congregate on the islands and the mainland (photo by Mari)

The floats double as a resting place for the birds

Listening for songbirds under the majestic oak


We assembled under the canopy of a huge oak tree, to listen for song birds. Sometimes they will even land on an outstretched hand holding bird seed for a quick snack. Other birds preferred to observe the landscape below from the safety of tall trees. Gaymond and Mari got some good shots of the birds.


Swallows in the trees

Proud Canadian Goose parents and their gosling (photo by Mari)

Pelicans and a Canadian goose on the island (photo by Gaymond)


Our group leaders kept track of bird sightings using the eBird app. We observed 33 species during our time together That's not bad for being off season. 


Our species list on eBird

Intrepid birdwatchers at Lake Merritt (photo by Gaymond)


Gaymond, Mari, and I ended our birdwatching with lunch at the Nua Thai Kitchen in Piedmont (noodle dishes all around in a beautiful environment), and great conversation. If you're interested in birdwatching (or just getting out with some good company), check out the monthly events offered by the Golden Gate Bird Alliance. We may see you there!


Wednesday, June 24, 2026

Mushroom Hunter: Dr. H. D. Thiers

I learned about mushroom hunter, Dr. Harry D. Thiers (1919-2000), while researching bolete mushrooms for the dye project using Bolete edulis (See Dye Project: Bolete with Alum, Bolete with Titanium Oxalate, and Bolete with Ferrous Sulfate). Thiers was born January 22, 1919 in Fort McKavett, Texas. He received his B.A. degree from the University of Texas in 1941, served in the U.S. Navy from 1942-1945, and received an M.A. degree from the University of Texas in 1947. He earned his Ph.D. at the University of Michigan in 1956, studying under Dr. Alexander H. Smith. Dr. Thiers' doctoral dissertation was on the Agaricales (gilled mushrooms) of the pine belt in eastern Texas.

Dr. Thiers began his career as an academic at Texas A&M University, where he taught for 12 years. He moved to California in 1959, where he taught at San Francisco State University for 30 more years and served as major professor for 35 Master's Degree students. Upon his arrival at San Francisco State University, he began building an herbarium that now houses over 220,000 specimens (focusing on mushrooms collected across North America, Hawaii, and Indonesia). It was renamed the Harry D. Thiers Herbarium at San Francisco State University in 1989.


Dr. Harry D. Thiers


As a researcher, Dr. Thiers published books and papers in both leading scientific journals and lay publications. He specialized in the fleshy fungi of California. He was recognized worldwide as the leading authority on boletes and an innovator in the research on secotioid fungi. He identified over 150 new species of fungi based on material collected in Europe, Australasia and throughout North America. Fourteen different taxa are named in his honor, including the genus Thiersia. Dr. Thiers retired in 1989 but continued his work on California mycota. According to a tribute written by Michael Boom in 2000, Dr. Thiers died in his sleep at the age of 81. He was in Ohio with his wife Ellen, visiting his daughter and family. He had spent the previous day collecting and studying mushrooms with friends and family


Dr. Thiers (photo by Michael Wood)


I was interested to learn more about Dr. Thiers because of his specialization in Californian mushrooms, including boletes. Bolete edulis frequently pops up in our yard under the big oak tree; they are big and fleshy and grow very rapidly. I can see why they were of interest to him. I was also interested to learn about secotioid fungi. According to Wikipedia:

"Secotioid" refers to an intermediate fungal form between mushrooms (agarics) and truffle-like fungi (gasteromycetes), where the cap does not fully open. These fungi often retain a stipe (stem) but have enclosed, internal, or contorted gills that do not forcibly discharge spores, adapting them for arid environments.

What a fascinating adaptation for a very dry habitat! It made me realize that in all my trips to the dessert with my folks we never saw any mushrooms, although we may have seen secotioids without realizing what we were seeing. An example is Agaricus deserticola  (see: https://en.wikipedia.org/wiki/Agaricus_deserticola).


Learn More

  • Thiers, Dr. Harry D. "California Mushrooms: A Field Guide to the Boletes". Macmillan Publishing Co., 1975. For an updated online version, see: https://www.mykoweb.com/boletes/

  • Thiers, Harry D. and Smith, Alexander H. "The Boletes of Michigan". University of Michigan Press, 1970.


Wednesday, June 17, 2026

Field Notes for June 2026

 Welcome back to Field Notes!


June 1, 2026

Shopping at the Farmer's Market. This is a great time of year to shop the farmer's markets in Oakland and surrounding areas. The produce is beautiful, whether vegetables like broccoli, summer squash, and cucumbers, or fruit like blueberries, peaches, and melons. Time to put away the hearty recipes of fall and winter, and start using seasonal fruits and vegetables. Stir fry, spring rolls, grilled or steamed veg, and kabobs serve as healthy main dishes. Follow-up with fruit bowls, strawberry shortcake, homemade sorbet, or fruit pie for delectable desserts. Yum!


Spring-to-summer produce at the Montclair Farmer's Market


June 3, 2026

Cooking with Mushrooms. For my latest cooking-with-mushrooms adventure, I sourced 6 ounces (170g) of fresh shiitake mushrooms from the grocery store, and used them to make a delicious stir fry. Main ingredients included chopped chicken, mushrooms, pea pods, shredded cabbage, grated carrot, udon noodles and a teriyaki-inspired stir-fry sauce, garnished with dry-roasted peanuts. The shiitake mushrooms added a bold, fresh, umami flavor to the dish. The mushrooms were cultivated by the Far West Fungi company in Moss Landing, CA.

Shiitake grow in groups on the decaying wood of deciduous trees. Its natural distribution includes warm, moist climates in Southeast Asia. Prior to this experience, I had cooked only with reconstituted dried shiitake mushrooms, which are also delicious.

 

Shiitake Mushrooms (Lentinula edodes)


June 6, 2026

Big Bear Sighting in Juneau.  My brother Dave was hiking out by Mendenhall Glacier in Juneau, Alaska recently, and encountered this big guy on the trail. Dave's account of the experience:

I was out walking in the mossy forest by the glacier and was almost back to my car when I saw something coming towards me on the trail ahead. It’s a big ol’ bear, and he's seen me too and stopped. Then he starts walking towards me again. I’m pretty sure we’ve seen him before and he's always been a good bear, and there were no bad vibes here, so I stepped out of the trail and stood next to bushes where he could easily see me. I stood there taking pictures and started talking. I told him what a handsome fellow he was, and that I would just stand here by the side of the trail and let him walk on by like the good bear he is. He paused a moment to check me out, but I kept encouraging him to walk on by and that’s what he did. Maybe 400 pounds?
Life is good!


Big Bear at Mendenhall Glacier (photo by Dave Harris)


June 9, 2026

OTHG Hike to Reinhardt Redwood Park. I joined Mari and Gaymond for the Over-the-Hills Gang hike through the redwoods, led by Anthony Fisher. We followed the Stream Trail along the creek, which still has quite a bit of water. Our group was pretty good sized, and we sauntered through the cool forest at a very comfortable pace. I was eager to learn more about Mari's recent trip to England and Scotland, and Gaymond's earlier trip to Greece. We were joined by fellow hiker and traveler, Lorie, who had recently sailed across the Atlantic Ocean, skirting the Sargasso Sea, and then visited Spain and England.


Hike in the redwoods


A favorite highlight of this trail is seeing the ladybugs (Hippodamia convergens) that congregate at a particular location along the trail about this time of year. This time we didn't see any ladybugs, although someone with a sense of humor had left several plastic ladybugs at the location. Anthony brought ginger and lemon flavored cookies for the half-way point in our hike, and someone else brought Girl Scout peanut butter sandwich cookies (Do-si-dos). We feasted!


Can you spot the plastic ladybug?


Mari, Gaymond and I finished our outing with lunch and good conversation at nearby Sparky's Giant Burgers. These hikes are so much fun, and the pace and company are excellent. Check the website to learn more about upcoming events at East Bay Parks.


June 12, 2026

Happy Birthday to my wonderful sister, Marianne! She is so much fun to be with, capable and accomplished, spirited and adventurous. We don't see each other very often, but it is such a pleasure when we do. Marianne works hard, loves her kids and grandkids, and deserves all good things. I'm looking forward to our next visit!


Picnic with my sister at Point Pinole a few years back!


June 15, 2026

Invasion of the Giant Puffballs. Bobo the Husky and I encountered several of these Giant Puffball on our morning walk (possibly Calvatia gigantea or Calvatia booniana). They were growing in the small redwood and oak grove by the upper reservoir. This one was about five inches across, but they can get much bigger (up to 19 1/2 inches, according to iNaturalist).


Giant Puffball


June 17, 2026

We Love Washing Windows. Bobo the Husky was temporarily displaced by a visit from a team of window washers. He was so interested in the whole process, and all the tools involved. Bobo volunteered to help (he pulled one of the sponges out of the soapy water), but got to relax and watch instead!


We Love Washing Windows


June 21, 2026 🌷

Happy summer solstice. Enjoy the longest day of the year and the official start of summer!


June 24, 2026

Prickly Neighbor. My brother Dave checks in periodically with photos and tales about his prickly neighbor. This porcupine forages on a spruce tree that is outside his home.


Porcupine in the spruce boughs (photo by Dave Harris)


June 27, 2026

Summer Read. The lazy days of summer are here, and a favorite pastime is reading on the patio. I'm currently reading The Nine Tailors by Dorothy L. Sayers. It was published in 1934 and still sparkles after over 90 years. The mystery series features Lord Peter Wimsey as the gentleman detective. I've been reading through the series over the past couple of years and thoroughly enjoy each case no matter what the season.



June 30, 2026 🌷🌞

Landscape Maintenance. Time for end-of-spring cleanup, and the kick off to summer activities. We've had so many beautiful flowers in the yard all month in all shades of pink, yellow, blue, red, orange, and white. There aren't as many weeds, thanks to diligent weeding whenever they pop up. Many of the grasses have gone to seed, so the garden has a slightly messy look, but lots of birds, squirrels, bees, butterflies, and other critters. Here are a few things we've worked on throughout the month:

☑Weed the garden paths and beds (ongoing task).

☑ Check the property for fire safety, in preparation for the City of Oakland's annual vegetation inspection. Trim branches that are close to the house, and clear the five-foot zone around the house, where needed. Note: I read through the literature supplied by the City, and I think we are in pretty good shape for the inspection. Thanks to the pruning we had done last October, we have no branches touching or hanging over the house. We have a lot of bark mulch on the property as ground cover, but learned that it is safe up to 12 inches thick (ours is 3-4 inches). One exception may be the small wood pile that is close to the house, so I might be asked to move that. Fire safety is very important in this part of the country. 

☑ Spruce up the main patio—remove cobwebs, wipe down the patio furniture, fluff up the cushions, clean up the brick surfaces, wash windows, and toss anything that is old, damaged, or no longer needed. Break out the Weber grill. Note: we had a window-washing service do a thorough cleaning of cobwebs (they had really gotten out of hand), and of the windows and screens. The patio is swept and the furniture clean and repaired (one of the Brown Jordan patio chairs had been damaged). We practically live on the patio this time of year, so it's great to give it a little tender loving care. Still need to get out the grill!

☑ Sweep debris from other surfaces throughout the yard. Note: I've gotten better at keeping up on this chore. Sometimes I'm tempted to purchase a small leaf blower to help with this task, but, honestly, I kind of enjoy the slow-living, meditative aspect of sweeping these surfaces.

☑Collect flowers and branches for spring/summer arrangements. Note: so many wonderful flower  combinations for small bouquets!